Channel-state information process processing method, network device, and user equipment

ABSTRACT

Embodiments of the present invention provide a channel-state information process processing method, a network device, and a user equipment, where the channel-state information process processing method includes: after receiving a first channel-state information CSI request sent by a first network device, if CSI corresponding to multiple aperiodic CSI processes has not been reported by a user equipment, dropping CSI corresponding to a part of aperiodic CSI processes among the multiple aperiodic CSI processes, where each CSI process is associated with a channel measurement resource and an interference measurement resource. A problem existing after a CoMP technology is introduced can be solved that the UE cannot implement processing of multiple CSI processes.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Patent ApplicationNo. PCT/CN2012/082384, filed on Sep. 28, 2012, which is herebyincorporated by reference in its entirety.

TECHNICAL FIELD

Embodiments of the present invention relate to the field ofcommunications technologies, and in particular, to a channel-stateinformation process processing method, a network device, and a userequipment.

BACKGROUND

In the field of radio communications technologies, before CoordinatedMultiple Point transmission and reception (CoMP for short below) isintroduced, for each user equipment (UE for short below) on one carrier,the UE can only be triggered to perform at most one aperiodicchannel-state information (CSI for short below) measurement feedback ata time, and a CSI reference resource is defined, where a referenceresource for aperiodic CSI reporting is right in a subframe thatreceives a CSI request, and a time interval to CSI reporting is 4 ms.Since only one piece of CSI is configured on one carrier at a time, whenreporting the CSI, the UE has an enough capability to completemeasurement and calculation of all CSI configured by a base station, andto report a result.

However, after the CoMP technology is introduced, multiple CSI processesmay be configured for one UE on one carrier, where a CSI process isassociated with a channel measurement resource and an interferencemeasurement resource, and reporting of one piece of CSI is associatedwith a CSI process, for example, processing of multiple aperiodic CSIprocesses. At this time, a problem exists that the UE cannot completeprocessing CSI configured by the base station.

SUMMARY

Embodiments of the present invention provide a channel-state informationprocess processing method, a network device, and a user equipment, whichare used to solve a problem existing in the prior art that a UE cannotcomplete processing CSI configured by a base station.

A first aspect of the present invention provides a channel-stateinformation process processing method, including:

-   -   after receiving a first channel-state information CSI request        sent by a first network device, where the first CSI request is        used to trigger aperiodic CSI reporting, if CSI corresponding to        multiple aperiodic CSI processes has not been reported by the        user equipment, dropping CSI corresponding to a part of        aperiodic CSI processes among the multiple aperiodic CSI        processes, where each CSI process is associated with a channel        measurement resource and an interference measurement resource.

The aperiodic CSI processes are CSI processes for aperiodic CSIreporting.

The dropping CSI corresponding to a part of aperiodic CSI processesamong the multiple aperiodic CSI processes is dropping reporting of theCSI corresponding to the part of aperiodic CSI processes among themultiple aperiodic CSI processes.

The multiple aperiodic CSI processes are aperiodic CSI processescorresponding to the first CSI request. Alternatively, before thereceiving a first CSI request sent by a first network device, the methodfurther includes: receiving a second CSI request, where the multipleaperiodic CSI processes are aperiodic CSI processes corresponding to thefirst CSI request and aperiodic CSI processes corresponding to thesecond CSI request.

The dropping CSI corresponding to a part of aperiodic CSI processesamong the multiple aperiodic CSI processes includes:

-   -   if the number of the multiple aperiodic CSI processes exceeds a        first threshold, dropping the CSI corresponding to the part of        aperiodic CSI processes among the multiple aperiodic CSI        processes.

The first threshold is predefined, or is notified by the first networkdevice, or is notified by the second network device.

The dropping CSI corresponding to a part of aperiodic CSI processesamong the multiple aperiodic CSI processes includes:

-   -   dropping, according to a dropping rule or priority, the CSI        corresponding to the part of aperiodic CSI processes among the        multiple aperiodic CSI processes corresponding to the first CSI        request; or    -   dropping CSI corresponding to all aperiodic CSI processes        corresponding to the first CSI request, where the CSI        corresponding to all aperiodic CSI processes corresponding to        the first CSI request is the CSI corresponding to the part of        aperiodic CSI processes.

Further, the dropping CSI corresponding to a part of aperiodic CSIprocesses among the multiple aperiodic CSI processes includes: dropping,according to a dropping rule or priority, the channel-state informationof the part of aperiodic CSI processes among the multiple aperiodic CSIprocesses corresponding to the first CSI request and the second CSIrequest; or

-   -   dropping CSI corresponding to all aperiodic CSI processes        corresponding to the first CSI request, where the CSI        corresponding to all aperiodic CSI processes corresponding to        the first CSI request is the CSI corresponding to the part of        aperiodic CSI processes.

In another implementation manner, the dropping CSI corresponding to apart of aperiodic CSI processes among the multiple aperiodic CSIprocesses includes:

-   -   dropping CSI corresponding to a part of aperiodic CSI processes        according to the number of aperiodic CSI processes with        corresponding CSI not reported by the user equipment and a CSI        process processing capability of the user equipment.

The CSI process processing capability of the user equipment is apredefined CSI process processing capability of the user equipment or aminimum CSI process processing capability of each user equipment.

Specifically, the CSI process processing capability of the userequipment is processing N CSI processes per ms, or is processing K CSIprocesses per M ms, where N is a positive number, and M and K arepositive integers. The CSI process processing capability of the userequipment may include multiple capability levels, where differentcapability levels correspond to different N values, or correspond todifferent combinations of M values and K values.

Further, the method may further include:

-   -   reporting the CSI process processing capability of the user        equipment to the first network device or a second network        device.

Further, the method may further include:

-   -   sending CSI obtained through measurement to the first network        device or the second network device, where CSI corresponding to        dropped processing of aperiodic CSI processes is replaced by a        previous measurement result or is replaced by a preset first        sequence, and the preset first sequence represents that the user        equipment drops the aperiodic CSI processes. The preset first        sequence is an all-0 sequence or an all-1 sequence.

An embodiment of the present invention further provides anotherchannel-state information process processing method, including: sendinga first channel-state information CSI request to a user equipment, wherethe first CSI request is used to trigger aperiodic CSI reporting; and

-   -   receiving CSI obtained by the user equipment through        measurement, where the CSI is obtained after dropping CSI        corresponding to a part of aperiodic CSI processes among        multiple aperiodic CSI processes when CSI corresponding to        multiple aperiodic CSI processes has not been reported by the        user equipment, where each CSI process is associated with a        channel measurement resource and an interference measurement        resource.

The aperiodic CSI processes are CSI processes for aperiodic CSIreporting.

The dropping CSI corresponding to a part of aperiodic CSI processesamong the multiple aperiodic CSI processes is dropping reporting of theCSI corresponding to the part of aperiodic CSI processes among themultiple aperiodic CSI processes.

The user equipment drops CSI corresponding to a part of aperiodic CSIprocesses among the multiple aperiodic CSI processes when the number ofthe multiple aperiodic CSI processes exceeds a first threshold, or dropsCSI corresponding to a part of aperiodic CSI processes according to thenumber of aperiodic CSI processes not reported by the user equipment anda CSI process processing capability of the user equipment.

The CSI process processing capability of the user equipment isprocessing N CSI processes per ms, or is processing K CSI processes perM ms, where N is a positive number, and M and K are positive integers.Alternatively, the CSI process processing capability of the userequipment includes multiple capability levels, where differentcapability levels correspond to different N values, or correspond todifferent combinations of M values and K values.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including:

-   -   receiving a first channel-state information CSI request sent by        a first network device, where the first CSI request is used to        trigger aperiodic CSI reporting; and    -   if CSI corresponding to multiple aperiodic CSI processes has not        been reported by the user equipment, dropping processing of a        part of information in a part of aperiodic CSI processes, where        each CSI process is associated with a channel measurement        resource and an interference measurement resource, and the part        of information in the aperiodic CSI processes includes at least        one of a channel quality indication, a precoding matrix        indication, a precoding type indication, or a rank indication.

The method may further include:

-   -   receiving first dropping indication information sent by the        first network device, where the first dropping indication        information carries a limit value of at least one of information        of the part of aperiodic CSI processes; or    -   receiving second dropping indication information sent by the        first network device, where the second dropping indication        information is used to indicate reporting at least one of        information of the part of aperiodic CSI processes by using a        measurement value reported last time.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including:

-   -   sending a first channel-state information CSI request to a user        equipment, where the first CSI request is used to trigger        aperiodic CSI reporting; and    -   receiving CSI obtained by the user equipment through        measurement, where the CSI is obtained after dropping processing        of a part of information in a part of aperiodic CSI processes        when CSI corresponding to multiple aperiodic CSI processes has        not been reported by the user equipment, where each CSI process        is associated with a channel measurement resource and an        interference measurement resource, and the part of information        in the aperiodic CSI processes includes at least one of a        channel quality indication, a precoding matrix indication, a        precoding type indication, or a rank indication.

The method may further include:

-   -   sending first dropping indication information to the user        equipment, where the first dropping indication information        carries a limit value of at least one of information of the part        of aperiodic CSI processes; or    -   sending second dropping indication information to the user        equipment, where the second dropping indication information is        used to indicate reporting at least one of information of the        part of aperiodic CSI processes by using a measurement value        reported last time.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including: sending a firstchannel-state information CSI request to a user equipment, where thefirst CSI request is used to trigger aperiodic CSI reporting, and a timeinterval for sending the first CSI request is no less than a first timeinterval,

-   -   where the first time interval is a predefined time interval, or        the method further includes:    -   sending a notification message carrying the first time interval        to the user equipment.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including:

-   -   receiving a first channel-state information CSI request sent by        a first network device, and assuming that a time interval that        the first network device sends the first CSI request is no less        than a first time interval.

The assuming that a time interval that the first network device sendsthe first CSI request is no less than a first time interval includes:

-   -   after receiving the first CSI request sent by the first network        device, dropping other first CSI requests received in the first        time interval.

The first time interval is predefined, or is notified by the firstnetwork device, and the first time interval is W subframes, where W is apositive integer.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including:

-   -   receiving, by a user equipment, a first channel-state        information CSI request sent by a first network device, and        dropping, by the user equipment, all CSI requests received in a        second time interval before next CSI reporting.

The second time interval is predefined, or is notified by the firstnetwork device, and the first time interval is W subframes, where W is apositive integer.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including:

-   -   obtaining, by a user equipment, a CSI process, where the CSI        process corresponds to a CSI reference resource, and in a time        domain, the CSI reference resource is a subframe including a        non-zero-power channel-state information reference signal NZP        CSI-RS resource corresponding to the CSI process and/or a        subframe including a channel-state information interference        measurement CSI-IM resource corresponding to the CSI process, or        in a time domain, the CSI reference resource is a subframe        including a zero-power channel-state information reference        signal ZP CSI-RS resource configured for the user equipment; and        processing, by the user equipment, the CSI process according to        the CSI reference resource.

In the foregoing embodiment, the subframe of the ZP CSI-RS resourceconfigured for the user equipment is a subframe of the ZP CSI-RSresource, which has a minimum period and is configured for the userequipment; or

-   -   in a time domain, the CSI reference resource is a subframe        including an NZP CSI-RS resource corresponding to the CSI        process and/or a subframe including a CSI-IM resource        corresponding to the CSI process, which specifically is:    -   if a period of the NZP CSI-RS resource corresponding to the CSI        process is greater than a period of the CSI-IM resource        corresponding to the CSI process, in the time domain, the CSI        reference resource is the subframe including the CSI-IM resource        corresponding to the CSI process, otherwise, in the time domain,        the CSI reference resource is the subframe including the NZP        CSI-RS resource corresponding to the CSI process; or    -   if a period of the NZP CSI-RS resource corresponding to the CSI        process is equal to a period of the CSI-IM resource        corresponding to the CSI process, in the time domain, the CSI        reference resource is the subframe including the NZP CSI-RS        resource corresponding to the CSI process and/or the subframe        including the CSI-IM resource corresponding to the CSI process.

The CSI reference resource is predefined, or the method furtherincludes:

-   -   receiving, by the user equipment, CSI reference resource        indication information sent by a first network device, where the        CSI reference resource indication information is used to        indicate that, in a time domain, the CSI reference resource is a        subframe including a non-zero-power channel-state information        reference signal NZP CSI-RS resource corresponding to the CSI        process and/or a subframe including a channel-state information        interference measurement CSI-IM resource corresponding to the        CSI process, or in a time domain, the CSI reference resource is        a subframe including a zero-power channel-state information        reference signal ZP CSI-RS resource configured for the user        equipment.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including: obtaining, by a userequipment, at least two CSI processes, where the at least two CSIprocesses correspond to a CSI reference resource, and in a time domain,the CSI reference resource is any one or a combination of a subframeincluding an NZP CSI-RS resource, a subframe including a CSI-IMresource, or a subframe including a ZP CSI-RS resource; and

-   -   processing, by the user equipment, the CSI processes according        to the CSI reference resource.

If the reference resource includes an NZP CSI-RS resource or a CSI-IMresource in the time domain, the NZP CSI-RS resource or the CSI-IMresource has a minimum period or a minimum subframe offset among NZPCSI-RS resources and CSI-IM resources respectively corresponding to theat least two CSI processes;

-   -   if the CSI reference resource includes an NZP CSI-RS resource in        the time domain, the NZP CSI-RS resource has a minimum period or        a minimum subframe offset among NZP CSI-RS resources        respectively corresponding to the at least two CSI processes;    -   if the CSI reference resource includes an NZP CSI-IM resource in        the time domain, the NZP CSI-IM resource has a minimum period or        a minimum subframe offset among NZP CSI-IM resources        respectively corresponding to the at least two CSI processes; or    -   if the reference resource includes a ZP CSI-RS resource in the        time domain, the ZP CSI-RS resource has a minimum period or a        minimum subframe offset among ZP CSI-RS resources configured for        the user equipment.

The CSI reference resource is predefined, or the method furtherincludes:

-   -   receiving, by the user equipment, CSI reference resource        indication information sent by a first network device, where the        CSI reference resource indication information is used to        indicate that, in a time domain, the CSI reference resource is        any one or a combination of a subframe including an NZP CSI-RS        resource, a subframe including a CSI-IM resource, or a subframe        including a ZP CSI-RS resource.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including:

-   -   obtaining, by a user equipment, a CSI process, where the CSI        process corresponds to at least two CSI reference resources.

In the at least two CSI reference resources, at least one CSI referenceresource is a reference resource of a CQI channel part in the CSIprocess, and is a subframe including an NZP CSI-RS resourcecorresponding to the CSI process in a time domain; and at least one CSIreference resource is a reference resource of a CQI interference part inthe CSI process, and is a subframe including a CSI-IM resourcecorresponding to the CSI process in a time domain.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including: obtaining, by a userequipment, a CSI process, where a CSI reference resource correspondingto the CSI process is multiple subframes in a time domain.

The multiple subframes are L subframes before a subframe triggering theCSI process or include the subframe triggering the CSI process and L-1subframes before the subframe triggering the CSI process, where L is apositive integer.

An embodiment of the present invention further provides a userequipment, including:

-   -   a first receiving module, configured to receive a first        channel-state information CSI request sent by a first network        device, where the first CSI request is used to trigger aperiodic        CSI reporting; and    -   a first measurement processing module, configured to: when CSI        corresponding to multiple aperiodic CSI processes has not been        reported by the user equipment, drop CSI corresponding to a part        of aperiodic CSI processes among the multiple aperiodic CSI        processes, where each CSI process is associated with a channel        measurement resource and an interference measurement resource.

An embodiment of the present invention further provides a networkdevice, including:

-   -   a third sending module, configured to send a first channel-state        information CSI request to a user equipment; and    -   a second receiving module, configured to receive CSI obtained by        the user equipment through measurement, where the CSI is        obtained after dropping CSI corresponding to a part of aperiodic        CSI processes among multiple aperiodic CSI processes when CSI        corresponding to multiple aperiodic CSI processes has not been        reported by the user equipment, corresponding to the multiple        aperiodic CSI processes, where each CSI process is associated        with a channel measurement resource and an interference        measurement resource.

An embodiment of the present invention further provides a userequipment, including:

-   -   a third receiving module, configured to receive a first        channel-state information CSI request sent by a first network        device, where the first CSI request is used to trigger aperiodic        CSI reporting; and    -   a second measurement processing module, configured to: when CSI        corresponding to multiple aperiodic CSI processes has not been        reported by a user equipment, drop processing of a part of        information in a part of aperiodic CSI processes, where each CSI        process is associated with a channel measurement resource and an        interference measurement resource, and the part of information        in the aperiodic CSI processes includes at least one of a        channel quality indication, a precoding matrix indication, a        precoding type indication, or a rank indication.

An embodiment of the present invention further provides a networkdevice, including:

-   -   a fourth sending module, configured to send a first        channel-state information CSI request to a user equipment, where        the first CSI request is used to trigger aperiodic CSI        reporting; and    -   a fourth receiving module, configured to receive CSI obtained by        the user equipment through measurement, where the CSI is        obtained after dropping processing of a part of information in a        part of aperiodic CSI processes when CSI corresponding to        multiple aperiodic CSI processes has not been reported by the        user equipment, where each CSI process is associated with a        channel measurement resource and an interference measurement        resource, and the part of information in the aperiodic CSI        processes includes at least one of a channel quality indication,        a precoding matrix indication, a precoding type indication, or a        rank indication.

An embodiment of the present invention further provides a networkdevice, including:

-   -   a fifth sending module, configured to send a first channel-state        information CSI request to a user equipment, a time interval for        sending the first CSI request being no less than a first time        interval, where the first time interval is a predefined time        interval, or the fifth sending module is further configured to        send a notification message carrying the first time interval to        the user equipment.

An embodiment of the present invention further provides a userequipment, including:

-   -   a fifth receiving module, configured to receive a first        channel-state information CSI request sent by a first network        device, where the first CSI request is used to trigger aperiodic        CSI reporting, and assume that a time interval that the first        network device sends the first CSI request is no less than a        first time interval.

An embodiment of the present invention further provides a userequipment, including:

-   -   a sixth receiving module, configured to receive a first        channel-state information CSI request sent by a first network        device, and drop all CSI requests received in a second time        interval before next CSI reporting.

An embodiment of the present invention further provides a userequipment, including:

-   -   a first obtaining module, configured to obtain a CSI process,        where the CSI process corresponds to a CSI reference resource,        and in a time domain, the CSI reference resource is a subframe        including a non-zero-power channel-state information reference        signal NZP CSI-RS resource corresponding to the CSI process        and/or a subframe including a channel-state information        interference measurement CSI-IM resource corresponding to the        CSI process, or in a time domain, the CSI reference resource is        a subframe including a zero-power channel-state information        reference signal ZP CSI-RS resource configured for the user        equipment; and    -   a first processing module, configured to process the CSI process        according to the CSI reference resource.

An embodiment of the present invention further provides a networkdevice, including:

-   -   a second obtaining module, configured to obtain at least two CSI        processes, where the at least two CSI processes correspond to a        CSI reference resource, and in a time domain, the CSI reference        resource is any one or a combination of a subframe including an        NZP CSI-RS resource, a subframe including a CSI-IM resource, or        a subframe including a ZP CSI-RS resource; and    -   a second processing module, configured to process the CSI        processes according to the CSI reference resource.

An embodiment of the present invention further provides a userequipment, including:

-   -   a third obtaining module, configured to obtain a CSI process,        where the CSI process corresponds to at least two CSI reference        resources.

In the at least two CSI reference resources, at least one CSI referenceresource is a reference resource of a CQI channel part in the CSIprocess, and is a subframe including an NZP CSI-RS resourcecorresponding to the CSI process in a time domain; and at least one CSIreference resource is a reference resource of a CQI interference part inthe CSI process, and is a subframe including a CSI-IM resourcecorresponding to the CSI process in a time domain.

An embodiment of the present invention further provides a userequipment, including: a fourth obtaining module, configured to obtain aCSI process, where a CSI reference resource corresponding to the CSIprocess is multiple subframes in a time domain.

The multiple subframes are L subframes before a subframe triggering theCSI process or include the subframe triggering the CSI process and L-1subframes before the subframe triggering the CSI process, where L is apositive integer.

In the channel-state information process processing method, the networkdevice, the base station, and the user equipment provided in theembodiments of the present invention, after receiving a firstchannel-state information request sent by the base station, the UE dropsthe processing of a part of CSI processes, thereby solving the problemexisting after a CoMP technology is introduced that the UE cannotimplement processing of multiple CSI processes.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solutions in the embodiments of the presentinvention more clearly, the following briefly introduces theaccompanying drawings required for describing the embodiments.Apparently, the accompanying drawings in the following description showmerely some embodiments of the present invention, and persons ofordinary skill in the art may still derive other drawings from theseaccompanying drawings without creative efforts.

FIG. 1 is a first schematic flowchart of a CSI process processing methodaccording to an embodiment of the present invention;

FIG. 2 is a second schematic flowchart of a CSI process processingmethod according to an embodiment of the present invention;

FIG. 3 is a third schematic flowchart of a CSI process processing methodaccording to an embodiment of the present invention;

FIG. 4 is a fourth schematic flowchart of a CSI process processingmethod according to an embodiment of the present invention;

FIG. 5 is a fifth schematic flowchart of a CSI process processing methodaccording to an embodiment of the present invention;

FIG. 6 is a first schematic structural diagram of a user equipmentaccording to an embodiment of the present invention;

FIG. 7 is a first schematic structural diagram of a network deviceaccording to an embodiment of the present invention;

FIG. 8 is a second schematic structural diagram of a network deviceaccording to an embodiment of the present invention;

FIG. 9 is a third schematic structural diagram of a network deviceaccording to an embodiment of the present invention;

FIG. 10 is a second schematic structural diagram of a user equipmentaccording to an embodiment of the present invention; and

FIG. 11 is a third schematic structural diagram of a user equipmentaccording to an embodiment of the present invention.

DESCRIPTION OF EMBODIMENTS

The following clearly describes the technical solutions in theembodiments of the present invention with reference to the accompanyingdrawings in the embodiments of the present invention. Apparently, thedescribed embodiments are merely a part rather than all of theembodiments of the present invention. All other embodiments obtained bypersons of ordinary skill in the art based on the embodiments of thepresent invention without creative efforts shall fall within theprotection scope of the present invention.

In view of the problem existing in the prior art that after the CoMPtechnology is introduced that a UE cannot process CSI configured by abase station, the embodiments of the present invention provide atechnical solution. FIG. 1 is a first schematic flowchart of a CSIprocess processing method according to an embodiment of the presentinvention. As shown in FIG. 1, the method includes the following steps.

Step 101: Receive a first CSI request sent by a first network device,where the first CSI request is used to trigger aperiodic CSI reporting.Specifically, in the embodiment of the present invention, the firstchannel-state information request may instruct a user equipment tomeasure channel-state information, and one first channel-stateinformation request may instruct the user equipment to drop multiplechannel-state information processes, where each CSI process isassociated with a channel measurement resource and an interferencemeasurement resource.

Step 102: If CSI corresponding to multiple CSI processes has not beenreported by the user equipment for aperiodic CSI reporting, drop CSIcorresponding to a part of aperiodic CSI processes among the multipleaperiodic CSI processes. Specifically, the aperiodic CSI processes areCSI processes for aperiodic CSI reporting. Dropping CSI corresponding toa part of aperiodic CSI processes among the multiple aperiodic CSIprocesses is dropping reporting of the CSI corresponding to the part ofaperiodic CSI processes among the multiple aperiodic CSI processes.

In the foregoing embodiment of the present invention, after receivingthe first channel-state information request sent by the first networkdevice, the UE drops the CSI corresponding to a part of CSI processes,thereby solving the problem existing after a CoMP technology isintroduced that the UE cannot implement processing of multiple CSIprocesses.

Specifically, in the foregoing embodiment, the multiple aperiodic CSIprocesses may be aperiodic CSI processes corresponding to the first CSIrequest. Alternatively, before the receiving a first channel-stateinformation request sent by a first network device, the method furtherincludes: receiving a second channel-state information request, and themultiple aperiodic CSI processes are aperiodic CSI processes, which arenot reported, corresponding to the first channel-state informationrequest and aperiodic CSI processes, which are not reported,corresponding to the second channel-state information request.

Processing of the dropping a part of aperiodic CSI processes among themultiple aperiodic CSI processes may be carried out in two situations.First, if the number of the multiple aperiodic CSI processes exceeds afirst threshold, a part of aperiodic CSI processes among the multipleaperiodic CSI processes are dropped. Second, a part of aperiodic CSIprocesses are dropped according to the number of aperiodic CSI processesnot reported by the user equipment and a CSI process processingcapability of the user equipment. Dropping the CSI processes may bedropping reporting of CSI corresponding to the CSI processes.

In the first situation, the dropping a part of aperiodic CSI processesamong the multiple aperiodic CSI processes includes: dropping the CSIcorresponding to the part of aperiodic CSI processes, so that the numberof aperiodic CSI processes not dropped among the multiple aperiodic CSIprocesses is less than or equal to the first threshold. The firstthreshold may be a predefined threshold, that is, the first threshold isconfigured on the base station and the UE in advance when acommunications system is pre-configured. When receiving a channel-stateinformation request, the user equipment may perform comparison accordingto the predefined threshold and the number of channel-state informationprocesses not reported. In addition, the first threshold may further benotified by the first network device, or notified by a second networkdevice.

In addition, the dropping CSI corresponding to a part of aperiodic CSIprocesses among the multiple aperiodic CSI processes includes:

-   -   dropping, according to a dropping rule or priority, the CSI        corresponding to the part of aperiodic CSI processes among the        multiple aperiodic CSI processes corresponding to the first CSI        request; or    -   dropping CSI corresponding to all aperiodic CSI processes        corresponding to the first CSI request, where the CSI        corresponding to all aperiodic CSI processes corresponding to        the first CSI request is the CSI corresponding to the part of        aperiodic CSI processes.

In addition, in the foregoing embodiment of the present invention, thedropping CSI corresponding to a part of aperiodic CSI processes amongthe multiple aperiodic CSI processes includes:

-   -   dropping, according to a dropping rule or priority, the CSI        corresponding to the part of aperiodic CSI processes among the        multiple aperiodic CSI processes corresponding to the first CSI        request and the second CSI request; or    -   dropping CSI corresponding to all aperiodic CSI processes        corresponding to the first CSI request, where the CSI        corresponding to all aperiodic CSI processes corresponding to        the first CSI request is the CSI corresponding to the part of        aperiodic CSI processes. In the foregoing embodiment of the        present invention, the dropping rule includes any one or several        of the following four items:    -   dropping CSI corresponding to an aperiodic CSI process with a        minimum index number or CSI corresponding to an aperiodic CSI        process with a maximum index number; dropping CSI corresponding        to an aperiodic CSI process that is triggered first or CSI        corresponding to an aperiodic CSI process that is triggered        last; dropping CSI corresponding to an aperiodic CSI process        with longest time since last feedback or CSI corresponding to an        aperiodic CSI process with shortest time since last feedback;        and dropping CSI corresponding to an aperiodic CSI process with        a highest feedback frequency or CSI corresponding to an        aperiodic CSI process with a lowest feedback frequency; and    -   CSI corresponding to an aperiodic CSI process with a low        priority is dropped first, and the priority includes any one or        several of the following four items: a priority of CSI        corresponding to an aperiodic CSI process with a small index        number is higher than that of CSI corresponding to an aperiodic        CSI process with a large index number or a priority of CSI        corresponding to an aperiodic CSI process with a large index        number is higher than that of CSI corresponding to an aperiodic        CSI process with a small index number, a priority of CSI        corresponding to an aperiodic CSI process triggered earlier is        higher than that of CSI corresponding to an aperiodic CSI        process triggered later or a priority of CSI corresponding to an        aperiodic CSI process triggered later is higher than that of CSI        corresponding to an aperiodic CSI process triggered earlier, a        priority of CSI corresponding to an aperiodic CSI process with a        long time since last feedback is higher than that of CSI        corresponding to an aperiodic CSI process with a short time        since last feedback or a priority of CSI corresponding to an        aperiodic CSI process with a short time since last feedback is        higher than that of CSI corresponding to an aperiodic CSI        process with a long time since last feedback, and a priority of        CSI corresponding to an aperiodic CSI process with a high        feedback frequency is higher than that of CSI corresponding to        an aperiodic CSI process with a low feedback frequency or a        priority of CSI corresponding to an aperiodic CSI process with a        low feedback frequency is higher than that of CSI corresponding        to an aperiodic CSI process with a high feedback frequency.

In a multi-carrier situation, priority at two dimensions of carrier andCSI process may be considered concurrently, and a CSI process with a lowpriority is dropped first. At this time, for all CSI processes, carrierindex numbers of CSI processes are compared firstly, and then CSIprocess index numbers are compared, and a CSI process with a lowpriority will be dropped first.

The technical solution of the present invention may be summarized toinclude three basic solutions:

-   -   first, when the UE receives a CSI request, if the UE has already        received at least one CSI request before, and CSI corresponding        to aperiodic CSI processes corresponding to the at least one CSI        request is not yet reported, and at this time, if the number of        all aperiodic CSI processes, with corresponding CSI not        reported, including CSI processes corresponding to the newly        received CSI request, exceeds a threshold K, the UE drops        processing of a part of aperiodic CSI processes according to a        dropping rule or priority of each CSI, so that the number of        aperiodic CSI processes, which are not dropped, with        corresponding CSI not reported is no greater than the threshold        K;    -   second, when the UE receives a CSI request, if the UE has not        received other CSI requests before, that is, a situation does        not exist that CSI processes corresponding to other CSI requests        are not yet reported, and at this time, if the number of        aperiodic CSI processes corresponding to a newly received CSI        request, that is, all aperiodic CSI processes with corresponding        CSI not reported, exceeds a threshold K, the UE drops processing        of a part of aperiodic CSI processes according to a dropping        rule or priority of each CSI, so that the number of CSI        processes, which are not dropped, with corresponding CSI not        reported is no greater than the threshold K; and    -   third, when the UE receives a CSI request, if the UE has already        received at least one CSI request before, and CSI corresponding        to aperiodic CSI processes corresponding to the at least one CSI        request is not yet reported, and at this time, if the number of        all aperiodic CSI processes, with corresponding CSI not        reported, including aperiodic CSI processes corresponding to the        newly received CSI request, exceeds a threshold K, the UE drops        processing of all the aperiodic CSI processes corresponding to        the newly received CSI request.

In the foregoing description, the CSI corresponding to a part ofaperiodic CSI processes may be dropped according to the number ofaperiodic CSI processes not reported by the user equipment and the CSIprocess processing capability of the user equipment, where the CSIprocess processing capability of the user equipment is a predefined CSIprocess processing capability of the user equipment or a minimum CSIprocess processing capability of each user equipment. Specifically, theCSI process processing capability of the UE is processing Nchannel-state information processes per ms, or is processing Kchannel-state information processes per M ms, where N is a positivenumber, and both M and K are positive integers.

For the processing capability of the UE, the CSI process processingcapability of the UE may be divided into multiple capability levelsaccording to a factor such as a type of the UE, where differentcapability levels correspond to different N values, or correspond todifferent combinations of M values and K values. For example, for afirst level, N=1, and for a second level, N=2; or for a first level,K=1, and M=4, and for a second level, K=2, and M=4.

In a specific implementation manner, the CSI process processingcapability of the UE may also be defined respectively for differentcarriers. For example, for a carrier with a bandwidth of 5 MHz, N=3, andfor a carrier with a bandwidth of 20 MHz, N=1.

In the foregoing embodiment of the present invention, the method mayfurther include the following step:

-   -   reporting, by the UE, the CSI process processing capability of        the user equipment to the first network device or the second        network device.

In the technical solution, though the UE reports and sends the CSIprocess processing capability to the network device, for the networkdevice, there are two types of specific processing, first, the basestation performs CSI configuration for the UE according to theprocessing capability of the UE, thereby preventing the CSI processconfigured for the UE from exceeding the process processing capability;and second, the base station cannot be constrained, and may stillconfigure CSI processes exceeding the processing capability for the UEaccording to actual requirements.

In the foregoing embodiment of the present invention, when it ispredefined that the CSI process processing capability of the UE isprocessing N CSI processes per ms, or is processing K channel-stateinformation processes per M ms, and if the CSI process processingcapability configured by the base station for the UE is processing N+nCSI processes per ms, or the CSI process processing capabilityconfigured for the UE is processing K+L CSI processes per M ms. At thistime, the UE may drop, according to a dropping rule or priority,processing of a part of channel-state information not reported, which issimilar to the method in the technical solution. Specifically,processing of n*T CSI processes may be dropped (where T is millisecondsfor processing the CSI), or processing of L CSI processes may bedropped, to achieve a purpose that the processing capability of the UEcan finish processing the remaining CSI processes, which are notreported. For the base station, since the processing capability of theUE is predefined, or the UE reports the processing capability of the UE,when configuring CSI processes exceeding the processing capability forthe UE, the base station can believe that the UE will drop the CSIprocesses that exceeds the processing capability instead of processingthe CSI processes, thereby unifying the base station and the UE.

In addition, in the foregoing embodiment of the present invention, themethod may further include the following step:

-   -   sending CSI obtained through measurement to the first network        device or the second network device, where CSI corresponding to        dropped processing of aperiodic CSI processes is replaced by a        previous measurement result or is replaced by a preset first        sequence, and the preset first sequence represents that the user        equipment drops the aperiodic CSI processes.

Specifically, the preset first sequence is an all-0 sequence or an all-1sequence, or is another sequence.

In addition, when CSI corresponding to multiple periodic CSI processeshas not been reported further by the user equipment in addition to theCSI corresponding to the multiple aperiodic CSI processes has not beenreported, the user equipment drops CSI, which has not been reported,corresponding to a part of CSI processes. In addition, when the totalnumber of periodic CSI processes and aperiodic CSI processes, which arenot reported by the user equipment, exceeds the first threshold, a partof CSI corresponding to the periodic CSI processes and/or CSIcorresponding to the aperiodic CSI processes is dropped. The periodicCSI processes herein are CSI processes for periodic CSI reporting.

Corresponding to the foregoing embodiment, an embodiment of the presentinvention further provides a channel-state information processprocessing method, FIG. 2 is a second schematic flowchart of a CSIprocess processing method according to an embodiment of the presentinvention. As shown in FIG. 2, the method includes the following steps.

Step 201: Send a first CSI request to a user equipment, where the firstCSI request is used to trigger aperiodic CSI reporting.

Step 202: Receive CSI obtained by the user equipment throughmeasurement, where the CSI is obtained after dropping CSI correspondingto a part of aperiodic CSI processes among multiple aperiodic CSIprocesses when CSI corresponding to the multiple aperiodic CSI processeshas not been reported by the user equipment, where each CSI process isassociated with a channel measurement resource and an interferencemeasurement resource.

In the foregoing embodiment, the aperiodic CSI processes are CSIprocesses for aperiodic CSI reporting. A network device sends the firstCSI request to the user equipment, and then receives the CSI obtained bythe user equipment through measurement, where the CSI is obtained afterdropping CSI corresponding to a part of aperiodic CSI processes amongmultiple aperiodic CSI processes when CSI corresponding to the multipleaperiodic CSI processes has not been reported by the user equipment,thereby solving the problem existing after a CoMP technology isintroduced that the UE cannot implement processing of multiple CSI.

In the foregoing embodiment of the present invention, the dropping CSIcorresponding to a part of aperiodic CSI processes among the multipleaperiodic CSI processes is dropping reporting of the CSI correspondingto the part of aperiodic CSI processes among the multiple aperiodic CSIprocesses, where CSI corresponding to dropped processing of aperiodicCSI processes is replaced by a previous measurement result or isreplaced by a preset first sequence, and the preset first sequencerepresents that the user equipment drops the aperiodic CSI processes.The preset first sequence is an all-0 sequence or an all-1 sequence.

In addition, in the foregoing embodiment of the present invention, theuser equipment drops CSI corresponding to a part of aperiodic CSIprocesses among the multiple aperiodic CSI processes when the number ofthe multiple aperiodic CSI processes exceeds a first threshold, or dropsCSI corresponding to a part of aperiodic CSI processes according to thenumber of aperiodic CSI processes not reported by the user equipment anda CSI process processing capability of the user equipment.

Further, the method may further include the following step: sending, bythe network device, the first threshold to the user equipment.

In addition, in the foregoing embodiment of the present invention, themethod may further include the following step: receiving the CSI processprocessing capability reported by the user equipment. The CSI processprocessing capability of the user equipment is processing N CSIprocesses per ms, or is processing K CSI processes per M ms, where N isa positive number, and M and K are positive integers. In addition, theCSI process processing capability of the user equipment includesmultiple capability levels, where different capability levels correspondto different N values, or correspond to different combinations of Mvalues and K values.

An embodiment of the present invention further provides a channel-stateinformation process processing method. FIG. 3 is a third schematicflowchart of a CSI process processing method according to an embodimentof the present invention. As shown in FIG. 3, the method includes thefollowing steps.

Step 301: Receive a first CSI request sent by a first network device,where the first CSI request is used to trigger aperiodic CSI reporting.

Step 302: If CSI corresponding to multiple aperiodic CSI processes hasnot been reported by a user equipment, drop processing of a part ofinformation in a part of aperiodic CSI processes, where each CSI processis associated with a channel measurement resource and an interferencemeasurement resource, and the part of information in the aperiodic CSIprocesses includes at least one of a channel quality indication, aprecoding matrix indication, a precoding type indication, or a rankindication.

Different from the embodiment shown in FIG. 1, in this embodiment,processing of a part of information in a part of channel-stateinformation processes is dropped. Specifically, for one piece of CSI, itmay include at least one of a channel quality indication, a precodingmatrix indication, a precoding type indication, or a rank indication,and the dropping processing of a part of information in a part ofchannel-state information process information may specifically bedropping processing of at least one of the channel quality indication,the precoding matrix indication, the precoding type indication, or therank indication. The aperiodic CSI processes are CSI processes foraperiodic CSI reporting.

In the foregoing embodiment of the present invention, specifically,dropping processing of which information may be predefined, or a basestation notifies the UE of it, or the UE applies to the base station forit, or it is set that the UE reports it to the base station.Specifically, conditions may be set for each piece of information, andit is selected, according to the set conditions, whether to processcorresponding information. For example, an RI value can be set as asubset of optional RI values, for example, if RI=1, it is unnecessary totry other RIs when the CSI process is processed; a PMI value also can beset as a subset of optional PMI values, for example, if PMI={1, 2, 3},it is unnecessary to try other PMIs when the CSI process is processed;or the RI value is set as a subset of optional RI values, and the PMIvalue is set as a subset of optional PMI values, for example, if RI=1and PMI=5, it is unnecessary to try other RIs and PMIs when the CSIprocess is processed. Definitely, the set conditions may also bepredefined.

Limiting information of each piece of information in the presentinvention is specifically for a situation where the processingcapability is limited, and is information added on the basis of CSIconfiguration. When the UE is capable of processing all CSI processes,the UE may select to use information in the CSI configuration or thelimiting information. When the UE is incapable of processing all CSIprocesses, the UE must use the limiting information.

As it is selected, according to the set conditions, whether to processcorresponding information in the foregoing, the foregoing embodiment ofthe present invention may further include a step of:

-   -   receiving first dropping indication information sent by the        first network device, where the first dropping indication        information carries a limit value of at least one of information        of the part of aperiodic CSI processes.

Specifically, similar to the foregoing embodiment, when a measurementresult is reported, the part of dropped information in the channel-stateinformation processes may be replaced by a preset first sequence, andthe preset first sequence represents that the user equipment does notprocess the part of information. The preset first sequence is an all-0sequence or an all-1 sequence, or is another sequence.

There is another manner, which is reporting one or more types of thechannel-state information by using a measurement value reported lasttime. At this time, the method may further include:

-   -   receiving second dropping indication information sent by the        first network device, where the second dropping indication        information is used to indicate reporting at least one of        information of the part of aperiodic CSI processes by using a        measurement value reported last time.

An embodiment of the present invention further provides a method, andthe method is a method of a network device corresponding to theforegoing embodiment shown in FIG. 3. FIG. 4 is a fourth schematicflowchart of a CSI process processing method according to an embodimentof the present invention. As shown in FIG. 4, the method includes thefollowing steps.

Step 401: Send a first channel-state information CSI request to a userequipment, where the first CSI request is used to trigger aperiodic CSIreporting.

Step 402: Receive CSI obtained by the user equipment throughmeasurement, where the CSI is obtained after dropping processing of apart of information in a part of aperiodic CSI processes when CSIcorresponding to the multiple aperiodic CSI processes has not beenreported by the user equipment, where each CSI process is associatedwith a channel measurement resource and an interference measurementresource, and the part of information in the aperiodic CSI processesincludes at least one of a channel quality indication, a precodingmatrix indication, a precoding type indication, or a rank indication.

The aperiodic CSI processes are CSI processes for aperiodic CSIreporting.

The method may further include the following step:

-   -   sending first dropping indication information to the user        equipment, where the first dropping indication information        carries a limit value of at least one of information of the part        of aperiodic CSI processes; or    -   sending second dropping indication information to the user        equipment, where the second dropping indication information is        used to indicate reporting at least one of information of the        part of aperiodic CSI processes by using a measurement value        reported last time.

An embodiment of the present invention further provides anotherchannel-state information process processing method. In the method, anetwork device sends a first channel-state information CSI request to auser equipment, and a time interval for sending the first CSI request isno less than a first time interval. The first time interval is apredefined time interval, or the method may further include: sending anotification message carrying the first time interval to the userequipment. That is, the network device will not configure CSI for the UEfor successive two times in the first time interval, and will not causethe UE to report for two times in the first time interval, therebyrelieving pressure of the UE. Specifically, the first time interval maybe several successive subframes.

For the UE, the UE may receive a first channel-state information CSIrequest sent by a first network device, and assume that a time intervalthat the first network device sends the first channel-state informationrequest is no less than the first time interval.

Specifically, that the UE assumes that a time interval that the firstnetwork device sends the first CSI request is greater than the firsttime interval refers to that, the UE believes that the first networkdevice will not send the first CSI request for two times in the firsttime interval, so that the UE does not receive the first CSI request anymore in the first time interval after receiving the first CSI requestonce; or the UE receives the first CSI request in the first timeinterval, but will drop it. That is, after receiving the first CSIrequest sent by the first network device, the UE drops other first CSIrequests received in the first time interval.

In addition, the first time interval is predefined, or is notified bythe first network device, and the first time interval is W subframes,where W is a positive integer.

The network device in the foregoing embodiment of the present invention,or another device that communicates with and controls the userequipment.

An embodiment of the present invention further provides a channel-stateinformation process processing method, including: a user equipmentreceives a first channel-state information CSI request sent by a firstnetwork device, and the user equipment drops all CSI requests receivedin a second time interval before next CSI reporting. The second timeinterval is predefined, or is notified by the first network device, andthe first time interval is W subframes, where W is a positive integer.

An embodiment of the present invention further provides a channel-stateinformation process processing method. FIG. 5 is a fifth schematicflowchart of a CSI process processing method according to an embodimentof the present invention. As shown in FIG. 5, the method includes thefollowing steps.

Step 501: A user equipment obtains a CSI process, where the CSI processcorresponds to a CSI reference resource, and in a time domain, the CSIreference resource is a subframe including a non-zero-powerchannel-state information reference signal NZP CSI-RS resourcecorresponding to the CSI process and/or a subframe including achannel-state information interference measurement CSI-IM resourcecorresponding to the CSI process, or in a time domain, the CSI referenceresource is a subframe including a zero-power channel-state informationreference signal ZP CSI-RS resource configured for the user equipment.

Step 502: The user equipment processes the CSI process according to theCSI reference resource.

In the foregoing step 501, the subframe of the ZP CSI-RS resourceconfigured for the user equipment is a subframe of the ZP CSI-RSresource, which has a minimum period and is configured for the userequipment.

Alternatively, in a time domain, the CSI reference resource is asubframe including an NZP CSI-RS resource corresponding to the CSIprocess and/or a subframe including a CSI-IM resource corresponding tothe CSI process, which specifically is:

-   -   if a period of the NZP CSI-RS resource corresponding to the CSI        process is greater than a period of the CSI-IM resource        corresponding to the CSI process, in the time domain, the CSI        reference resource is the subframe including the CSI-IM resource        corresponding to the CSI process, otherwise, in the time domain,        the CSI reference resource is the subframe including the NZP        CSI-RS resource corresponding to the CSI process; or    -   if a period of the NZP CSI-RS resource corresponding to the CSI        process is equal to a period of the CSI-IM resource        corresponding to the CSI process, in the time domain, the CSI        reference resource is the subframe including the NZP CSI-RS        resource corresponding to the CSI process and/or the subframe        including the CSI-IM resource corresponding to the CSI process.

The CSI reference resource is predefined. Alternatively, the methodfurther includes:

The user equipment receives CSI reference resource indicationinformation sent by a first network device, where the CSI referenceresource indication information is used to indicate that, in a timedomain, the CSI reference resource is a subframe including anon-zero-power channel-state information reference signal NZP CSI-RSresource corresponding to the CSI process and/or a subframe including achannel-state information interference measurement CSI-IM resourcecorresponding to the CSI process, or in a time domain, the CSI referenceresource is a subframe including a zero-power channel-state informationreference signal ZP CSI-RS resource configured for the user equipment.

The CSI reference resource indication information sent by the firstnetwork device is radio resource control RRC signaling.

In the foregoing embodiment, the CSI processes are CSI processes forperiodic reporting or CSI processes for aperiodic reporting.

An embodiment of the present invention further provides the followingtechnical solution, which includes the following steps:

-   -   obtaining, by a user equipment, at least two CSI processes,        where the at least two CSI processes correspond to a CSI        reference resource, and in a time domain, the CSI reference        resource is any one or a combination of a subframe including an        NZP CSI-RS resource, a subframe including a CSI-IM resource, or        a subframe including a ZP CSI-RS resource; and    -   processing, by the user equipment, the CSI processes according        to the CSI reference resource.

Specifically, in the foregoing embodiment, if the reference resourceincludes an NZP CSI-RS resource or a CSI-IM resource in the time domain,the NZP CSI-RS resource or the CSI-IM resource has a minimum period or aminimum subframe offset among NZP CSI-RS resources and CSI-IM resourcesrespectively corresponding to the at least two CSI processes;

-   -   if the CSI reference resource includes an NZP CSI-RS resource in        the time domain, the NZP CSI-RS resource has a minimum period or        a minimum subframe offset among NZP CSI-RS resources        respectively corresponding to the at least two CSI processes;    -   if the CSI reference resource includes an NZP CSI-IM resource in        the time domain, the NZP CSI-IM resource has a minimum period or        a minimum subframe offset among NZP CSI-IM resources        respectively corresponding to the at least two CSI processes; or    -   if the reference resource includes a ZP CSI-RS resource in the        time domain, the ZP CSI-RS resource has a minimum period or a        minimum subframe offset among ZP CSI-RS resources configured for        the user equipment.

In the foregoing embodiment, the CSI reference resource is predefined.Alternatively, the method further includes:

-   -   receiving, by the user equipment, CSI reference resource        indication information sent by a first network device, where the        CSI reference resource indication information is used to        indicate that, in a time domain, the CSI reference resource is        any one or a combination of a subframe including an NZP CSI-RS        resource, a subframe including a CSI-IM resource, or a subframe        including a ZP CSI-RS resource.

The CSI reference resource indication signaling is RRC signaling.

In the foregoing embodiment, the CSI processes are CSI processes forperiodic reporting or CSI processes for aperiodic reporting.

An embodiment of the present invention further provides a technicalsolution. That is, a user equipment obtains a CSI process, where the CSIprocess corresponds to at least two CSI reference resources.Specifically, in the at least two CSI reference resources, at least oneCSI reference resource is a reference resource of a CQI channel part inthe CSI process, and is a subframe including an NZP CSI-RS resourcecorresponding to the CSI process in a time domain; and at least one CSIreference resource is a reference resource of a CQI interference part inthe CSI process, and is a subframe including a CSI-IM resourcecorresponding to the CSI process in a time domain. In this embodiment,the CSI processes are CSI processes for periodic reporting or CSIprocesses for aperiodic reporting.

An embodiment of the present invention further provides the followingtechnical solution. A user equipment obtains a CSI process, where a CSIreference resource corresponding to the CSI process is multiplesubframes in a time domain. The multiple subframes are L subframesbefore a subframe triggering the CSI process or include the subframetriggering the CSI process and L-1 subframes before the subframetriggering the CSI process, where L is a positive integer. In addition,the value of L is predefined, or is notified by a network device. Inthis embodiment, the CSI processes are CSI processes for periodicreporting or CSI processes for aperiodic reporting.

The foregoing several embodiments of the present invention may be summedup as the following solutions.

The first solution includes the following steps.

For a situation where a CSI process has a CSI reference resource, theuser equipment processes the CSI process according to the referenceresource.

In a time domain, the CSI reference resource is a subframe including anon-zero-power channel-state information reference signal resource (NZPCSI-RS resource) associated with the CSI process, and/or, in a timedomain, the CSI reference resource is a subframe including aninterference measurement resource (IMR) associated with the CSI process.

The second solution is for a situation where a CSI process has a CSIreference resource, and the user equipment processes the CSI processaccording to the reference resource.

In a time domain, the CSI reference resource is a subframe including azero-power channel-state information reference signal resource (ZPCSI-RS resource) configured for the user equipment.

The third solution is for a situation where multiple CSI processes havea same CSI reference resource, and the CSI reference resource includes aCSI-RS resource and/or IMR.

The user equipment may be notified of configuration of the CSI referenceresource in an implicit notification manner. For the first method andthe second method: if a period of the NZP CSI-RS resource associatedwith the CSI process is greater than a period of the IMR associated withthe CSI process, in the time domain, the CSI reference resource is asubframe including the IMR associated with the CSI process, otherwise,in the time domain, the CSI reference resource is a subframe includingthe NZP CSI-RS associated with the CSI process; and if a period of theNZP CSI-RS associated with the CSI process is equal to a period of theIMR associated with the CSI process, in the time domain, the CSIreference resource is a subframe including the NZP CSI-RS or the IMRassociated with the CSI process.

For the third method: if periods of the IMRs corresponding to themultiple CSI processes are different, in the time domain, the referenceresource is a subframe including the IMR with a minimum period among theIMRs; and if periods of the IMRs corresponding to the multiple CSIprocesses are the same, in the time domain, the reference resource is asubframe including the IMR with a minimum subframe offset among theIMRs.

The user equipment may also be notified of the configuration of thereference resource in an explicit signaling manner, where the explicitsignaling includes RRC (radio resource control) signaling.

The configuration of the reference resource may also be predefined,which includes: it is defined that, in the time domain, the referenceresource is a subframe including the NZP CSI-RS resource or the IMRcorresponding to the CSI process, or it is defined that, in the timedomain, the reference resource is a subframe including the ZP CSI-RSresource configured for the UE.

The fourth solution is for a situation where a CSI process has two CSIreference resources, where the first CSI reference resource is areference resource of a CQI channel part in the CSI process, and in thetime domain, is a subframe including the CSI-RS resource associated withthe CSI process, and the second CSI reference resource is a referenceresource of a CQI interference part in the CSI process, and in the timedomain, is a subframe including the IMR associated with the CSI process.

The fifth solution is for a situation where a CSI reference resource ofa CSI process is multiple subframes in the time domain. The multiplesubframes are L subframes before a subframe triggering the CSI processor include the subframe triggering the CSI process and L-1 subframesbefore the subframe triggering the CSI process.

In the foregoing embodiments of the present invention, by defining thatin a time domain, a reference resource corresponding to a CSI process isa subframe or multiple subframes including a resource (such as NZPCSI-RS and CSI-IM) appearing in a certain period, a UE only measures andcalculates corresponding CSI according to the reference resourcecorresponding to the CSI process, and for multiple CSI processes whichare triggered for many times and have the same reference resource, theUE only needs to measure and calculate the corresponding CSI once,thereby reducing UE complexity for CSI process processing, solving aproblem of high UE complexity for CSI process processing, and solvingthe problem existing after a CoMP technology is introduced to someextent that the UE cannot implement processing of multiple CSIprocesses. The technical solutions of the present invention may be usedin a situation where the user equipment receives a CSI request on onecarrier, and may also be used in a situation where the user equipmentreceives CSI requests on multiple carriers. In the foregoing embodimentsof the present invention, the setting of a first threshold and thesetting of numerical values of N, K, and L in a CSI process processingcapability of the user equipment may be defined for the situation thatthe CSI request is on one carrier; and may also be defined for thesituation that the CSI requests are on multiple carriers. Then, thedefined numerical values are allocated on the CSI request on eachcarrier. A numerical value may further be defined separately for a CSIrequest on one carrier. If there are CSI requests on C carriers, it isset that corresponding values of the CSI requests on the C carriers is Ctimes of the numerical values defined above. Alternatively, a numericalvalue may further be defined separately for a CSI request on onecarrier. If there are CSI requests on multiple carriers, it is set thatcorresponding values of the CSI requests on the multiple carriers is Dtimes of the numerical values defined above, where D is a fixed value,for example, D=2.

FIG. 6 is a first schematic structural diagram of a user equipmentaccording to an embodiment of the present invention. As shown in FIG. 6,the user equipment includes a first receiving module 11 and a firstmeasurement processing module 12. The first receiving module 11 isconfigured to receive a first channel-state information CSI request sentby a first network device, where the first CSI request is used totrigger aperiodic CSI reporting. The first measurement processing module12 is configured to: when CSI corresponding to multiple aperiodic CSIprocesses has not been reported by the user equipment, drop CSIcorresponding to a part of aperiodic CSI processes among the multipleaperiodic CSI processes, where each CSI process is associated with achannel measurement resource and an interference measurement resource.

In the foregoing embodiment of the present invention, the aperiodic CSIprocesses are CSI processes for aperiodic CSI reporting.

Further, that the first measurement processing module drops CSIcorresponding to a part of aperiodic CSI processes among the multipleaperiodic CSI processes is dropping reporting of the CSI correspondingto the part of aperiodic CSI processes among the multiple aperiodic CSIprocesses.

The multiple aperiodic CSI processes are aperiodic CSI processescorresponding to the first CSI request.

Before receiving the first CSI request sent by the first network device,the first receiving module 11 further receives a second CSI request,where the multiple aperiodic CSI processes are aperiodic CSI processescorresponding to the first CSI request and aperiodic CSI processescorresponding to the second CSI request.

That the first measurement processing module 12 drops CSI correspondingto a part of aperiodic CSI processes among the multiple aperiodic CSIprocesses includes: if the number of the multiple aperiodic CSIprocesses exceeds a first threshold, dropping the CSI corresponding tothe part of aperiodic CSI processes among the multiple aperiodic CSIprocesses.

Further, the dropping CSI corresponding to a part of aperiodic CSIprocesses among the multiple aperiodic CSI processes includes: droppingthe CSI corresponding to the part of aperiodic CSI processes, so thatthe number of aperiodic CSI processes not dropped among the multipleaperiodic CSI processes is less than or equal to the first threshold.

The first threshold is predefined, or is notified by the first networkdevice, or is notified by a second network device.

The first measurement processing module 12 is specifically configured todrop, according to a dropping rule or priority, the CSI corresponding tothe part of aperiodic CSI processes among the multiple aperiodic CSIprocesses corresponding to the first CSI request; or

-   -   drop CSI corresponding to all aperiodic CSI processes        corresponding to the first CSI request, where the CSI        corresponding to all aperiodic CSI processes corresponding to        the first CSI request is the CSI corresponding to the part of        aperiodic CSI processes.

In addition, the first measurement processing module 12 is specificallyconfigured to drop, according to a dropping rule or priority,channel-state information of a part of aperiodic CSI processes among themultiple aperiodic CSI processes corresponding to the first CSI requestand the second CSI request; or drop CSI corresponding to all aperiodicCSI processes corresponding to the first CSI request, where the CSIcorresponding to all aperiodic CSI processes corresponding to the firstCSI request is the CSI corresponding to the part of aperiodic CSIprocesses.

The dropping rule includes any one or several of the following fouritems:

-   -   dropping CSI corresponding to an aperiodic CSI process with a        minimum index number or CSI corresponding to an aperiodic CSI        process with a maximum index number; dropping CSI corresponding        to an aperiodic CSI process that is triggered first or CSI        corresponding to an aperiodic CSI process that is triggered        last; dropping CSI corresponding to an aperiodic CSI process        with longest time since last feedback or CSI corresponding to an        aperiodic CSI process with shortest time since last feedback;        and dropping CSI corresponding to an aperiodic CSI process with        a highest feedback frequency or CSI corresponding to an        aperiodic CSI process with a lowest feedback frequency; and    -   CSI corresponding to an aperiodic CSI process with a low        priority is dropped first, and the priority includes any one or        several of the following four items: a priority of CSI        corresponding to an aperiodic CSI process with a small index        number is higher than that of CSI corresponding to an aperiodic        CSI process with a large index number or a priority of CSI        corresponding to an aperiodic CSI process with a large index        number is higher than that of CSI corresponding to an aperiodic        CSI process with a small index number, a priority of CSI        corresponding to an aperiodic CSI process triggered earlier is        higher than that of CSI corresponding to an aperiodic CSI        process triggered later or a priority of CSI corresponding to an        aperiodic CSI process triggered later is higher than that of CSI        corresponding to an aperiodic CSI process triggered earlier, a        priority of CSI corresponding to an aperiodic CSI process with a        long time since last feedback is higher than that of CSI        corresponding to an aperiodic CSI process with a short time        since last feedback or a priority of CSI corresponding to an        aperiodic CSI process with a short time since last feedback is        higher than that of CSI corresponding to an aperiodic CSI        process with a long time since last feedback, and a priority of        CSI corresponding to an aperiodic CSI process with a high        feedback frequency is higher than that of CSI corresponding to        an aperiodic CSI process with a low feedback frequency or a        priority of CSI corresponding to an aperiodic CSI process with a        low feedback frequency is higher than that of CSI corresponding        to an aperiodic CSI process with a high feedback frequency.

In addition, the first measurement processing module 12 may further bespecifically configured to drop CSI corresponding to a part of aperiodicCSI processes according to the number of aperiodic CSI processes withcorresponding CSI not reported by the user equipment and a CSI processprocessing capability of the user equipment.

The CSI process processing capability of the user equipment is apredefined CSI process processing capability of the user equipment or aminimum CSI process processing capability of each user equipment. Inaddition, the CSI process processing capability of the user equipment isprocessing N CSI processes per ms, or is processing K CSI processes perM ms, where N is a positive number, and M and K are positive integers.

Further, the CSI process processing capability of the user equipmentincludes multiple capability levels, where different capability levelscorrespond to different N values, or correspond to differentcombinations of M values and K values.

The user equipment may further include a first sending module. The firstsending module is configured to report the CSI process processingcapability of the user equipment to the first network device or thesecond network device.

The user equipment may further include a second sending module. Thesecond sending module is configured to send CSI obtained throughmeasurement to the first network device or the second network device,where CSI corresponding to dropped processing of aperiodic CSI processesis replaced by a previous measurement result or is replaced by a presetfirst sequence, and the preset first sequence represents that the userequipment drops the aperiodic CSI processes.

The preset first sequence is an all-0 sequence or an all-1 sequence.

Further, the first measurement processing module 12 may further beconfigured to: if CSI corresponding to multiple periodic CSI processeshas not been reported further by the user equipment in addition to theCSI, which has not been reported, corresponding to the multipleaperiodic CSI processes, drop CSI, which has not been reported,corresponding to a part of CSI processes. Specifically, when the totalnumber of periodic CSI processes and aperiodic CSI processes, which arenot reported by the user equipment, exceeds the first threshold, a partof CSI corresponding to the periodic CSI processes and/or CSIcorresponding to the aperiodic CSI processes is dropped.

FIG. 7 is a first schematic structural diagram of a network deviceaccording to an embodiment of the present invention. As shown in FIG. 7,the network device includes a third sending module 21 and a secondreceiving module 22. The third sending module 21 is configured to send afirst channel-state information CSI request to a user equipment, wherethe first CSI request is used to trigger aperiodic CSI reporting. Thesecond receiving module 22 is configured to receive CSI obtained by theuser equipment through measurement, where the CSI is obtained afterdropping CSI corresponding to a part of aperiodic CSI processes amongmultiple aperiodic CSI processes when CSI corresponding to multipleaperiodic CSI processes has not been reported by the user equipment,where each CSI process is associated with a channel measurement resourceand an interference measurement resource.

In the foregoing embodiment, the aperiodic CSI processes are CSIprocesses for aperiodic CSI reporting. Dropping CSI corresponding to apart of aperiodic CSI processes among the multiple aperiodic CSIprocesses is dropping reporting of the CSI corresponding to the part ofaperiodic CSI processes among the multiple aperiodic CSI processes.

In the foregoing embodiment, CSI corresponding to dropped processing ofaperiodic CSI processes is replaced by a previous measurement result oris replaced by a preset first sequence, and the preset first sequencerepresents that the user equipment drops the aperiodic CSI processes.The preset first sequence is an all-0 sequence or an all-1 sequence.

In the foregoing embodiment, the user equipment drops CSI correspondingto a part of aperiodic CSI processes among the multiple aperiodic CSIprocesses when the number of the multiple aperiodic CSI processesexceeds a first threshold, or drops CSI corresponding to a part ofaperiodic CSI processes according to the number of aperiodic CSIprocesses not reported by the user equipment and a CSI processprocessing capability of the user equipment.

Further, the third sending module 21 is further configured to send thefirst threshold to the user equipment.

The second receiving module 22 may further be configured to receive theCSI process processing capability reported by the user equipment.

The CSI process processing capability of the user equipment isprocessing N CSI processes per ms, or is processing K CSI processes perM ms, where N is a positive number, and M and K are positive integers.

In addition, the CSI process processing capability of the user equipmentincludes multiple capability levels, where different capability levelscorrespond to different N values, or correspond to differentcombinations of M values and K values.

FIG. 8 is a second schematic structural diagram of a network deviceaccording to an embodiment of the present invention. As shown in FIG. 8,the network device includes a third receiving module 31 and a secondmeasurement processing module 32. The third receiving module 31 isconfigured to receive a first channel-state information CSI request sentby a first network device, where the first CSI request is used totrigger aperiodic CSI reporting. The second measurement processingmodule 32 is configured to: when CSI corresponding to multiple aperiodicCSI processes has not been reported by the user equipment, dropprocessing of a part of information in a part of aperiodic CSIprocesses, where each CSI process is associated with a channelmeasurement resource and an interference measurement resource, and thepart of information in the aperiodic CSI processes includes at least oneof a channel quality indication, a precoding matrix indication, aprecoding type indication, or a rank indication.

The aperiodic CSI processes are CSI processes for aperiodic CSIreporting.

The third receiving module 31 is further configured to receive firstdropping indication information sent by the first network device, wherethe first dropping indication information carries a limit value of atleast one of information of the part of aperiodic CSI processes; orreceive second dropping indication information sent by the first networkdevice, where the second dropping indication information is used toindicate reporting at least one of information of the part of aperiodicCSI processes by using a measurement value reported last time.

FIG. 9 is a third schematic structural diagram of a network deviceaccording to an embodiment of the present invention. As shown in FIG. 9,the network device includes a fourth sending module 41 and a fourthreceiving module 42. The fourth sending module 41 is configured to senda first channel-state information CSI request to a user equipment, wherethe first CSI request is used to trigger aperiodic CSI reporting. Thefourth receiving module 42 is configured to receive CSI obtained by theuser equipment through measurement, where the CSI is obtained afterdropping processing of a part of information in a part of aperiodic CSIprocesses when CSI corresponding to multiple aperiodic CSI processes hasnot been reported by the user equipment, where each CSI process isassociated with a channel measurement resource and an interferencemeasurement resource, and the part of information in the aperiodic CSIprocesses includes at least one of a channel quality indication, aprecoding matrix indication, a precoding type indication, or a rankindication.

The aperiodic CSI processes are CSI processes for aperiodic CSIreporting.

The fourth sending module 41 is further configured to send firstdropping indication information to the user equipment, where the firstdropping indication information carries a limit value of at least one ofinformation of the part of aperiodic CSI processes; or send seconddropping indication information to the user equipment, where the seconddropping indication information is used to indicate reporting at leastone of information of the part of aperiodic CSI processes by using ameasurement value reported last time.

An embodiment of the present invention further provides a networkdevice, including a fifth sending module, where the module is configuredto send a first channel-state information CSI request to a userequipment, and a time interval for sending the first CSI request is noless than a first time interval. The first time interval is a predefinedtime interval. Alternatively, the fifth sending module is furtherconfigured to send a notification message carrying the first timeinterval to the user equipment.

An embodiment of the present invention further provides a userequipment. The user equipment includes a fifth receiving module, wherethe module is configured to receive a first channel-state informationCSI request sent by a first network device, and assume that a timeinterval that the first network device sends the first CSI request is noless than a first time interval. The assuming, by the fifth receivingmodule, that a time interval that the first network device sends thefirst CSI request is no less than a first time interval includes: afterreceiving the first CSI request sent by the first network device,dropping other first CSI requests received in the first time interval.

The first time interval is predefined, or is notified by the firstnetwork device, and the first time interval is W subframes, where W is apositive integer.

An embodiment of the present invention further provides a userequipment. The user equipment includes a sixth receiving module, wherethe module is configured to receive a first channel-state informationCSI request sent by a first network device, and the user equipment dropsall CSI requests received in a second time interval before next CSIreporting.

The second time interval is predefined, or is notified by the firstnetwork device, and the first time interval is W subframes, where W is apositive integer.

FIG. 10 is a second schematic structural diagram of a user equipmentaccording to an embodiment of the present invention. As shown in FIG.10, the user equipment includes a first obtaining module 51 and a firstprocessing module 52. The first obtaining module 51 is configured toobtain a CSI process, where the CSI process corresponds to a CSIreference resource, and in a time domain, the CSI reference resource isa subframe including a non-zero-power channel-state informationreference signal NZP CSI-RS resource corresponding to the CSI processand/or a subframe including a channel-state information interferencemeasurement CSI-IM resource corresponding to the CSI process, or in atime domain, the CSI reference resource is a subframe including azero-power channel-state information reference signal ZP CSI-RS resourceconfigured for the user equipment. The first processing module 52 isconfigured to process the CSI process according to the CSI referenceresource. The subframe of the ZP CSI-RS resource configured for the userequipment is a subframe of the ZP CSI-RS resource, which has a minimumperiod and is configured for the user equipment; or,

-   -   in a time domain, the CSI reference resource is a subframe        including an NZP CSI-RS resource corresponding to the CSI        process and/or a subframe including a CSI-IM resource        corresponding to the CSI process, which specifically is:    -   if a period of the NZP CSI-RS resource corresponding to the CSI        process is greater than a period of the CSI-IM resource        corresponding to the CSI process, in the time domain, the CSI        reference resource is the subframe including the CSI-IM resource        corresponding to the CSI process, otherwise, in the time domain,        the CSI reference resource is the subframe including the NZP        CSI-RS resource corresponding to the CSI process; or    -   if a period of the NZP CSI-RS resource corresponding to the CSI        process is equal to a period of the CSI-IM resource        corresponding to the CSI process, in the time domain, the CSI        reference resource is the subframe including the NZP CSI-RS        resource corresponding to the CSI process and/or the subframe        including the CSI-IM resource corresponding to the CSI process.

The CSI reference resource is predefined. The user equipment furtherincludes a first indication receiving module, and the module isconfigured to receive CSI reference resource indication information sentby a first network device, where the CSI reference resource indicationinformation is used to indicate that, in a time domain, the CSIreference resource is a subframe including a non-zero-powerchannel-state information reference signal NZP CSI-RS resourcecorresponding to the CSI process and/or a subframe including achannel-state information interference measurement CSI-IM resourcecorresponding to the CSI process, or in a time domain, the CSI referenceresource is a subframe including a zero-power channel-state informationreference signal ZP CSI-RS resource configured for the user equipment.

The received CSI reference resource indication information sent by thefirst network device is radio resource control RRC signaling.

FIG. 11 is a third schematic structural diagram of a user equipmentaccording to an embodiment of the present invention. As shown in FIG.11, the user equipment includes a second obtaining module 61 and asecond processing module 62. The second obtaining module 61 isconfigured to obtain at least two CSI processes, where the at least twoCSI processes correspond to a CSI reference resource, and in a timedomain, the CSI reference resource is any one or a combination of asubframe including an NZP CSI-RS resource, a subframe including a CSI-IMresource, or a subframe including a ZP CSI-RS resource. The secondprocessing module 62 is configured to process the CSI processesaccording to the CSI reference resource.

If the reference resource includes an NZP CSI-RS resource or a CSI-IMresource in the time domain, the NZP CSI-RS resource or the CSI-IMresource has a minimum period or a minimum subframe offset among NZPCSI-RS resources and CSI-IM resources respectively corresponding to theat least two CSI processes;

-   -   if the CSI reference resource includes an NZP CSI-RS resource in        the time domain, the NZP CSI-RS resource has a minimum period or        a minimum subframe offset among NZP CSI-RS resources        respectively corresponding to the at least two CSI processes;    -   if the CSI reference resource includes an NZP CSI-IM resource in        the time domain, the NZP CSI-IM resource has a minimum period or        a minimum subframe offset among NZP CSI-IM resources        respectively corresponding to the at least two CSI processes; or    -   if the reference resource includes a ZP CSI-RS resource in the        time domain, the ZP CSI-RS resource has a minimum period or a        minimum subframe offset among ZP CSI-RS resources configured for        the user equipment.

The CSI reference resource is predefined, or, the user equipment furtherincludes: a second indication receiving module, configured to receiveCSI reference resource indication information sent by a first networkdevice, where the CSI reference resource indication information is usedto indicate that, in a time domain, the CSI reference resource is anyone or a combination of a subframe including an NZP CSI-RS resource, asubframe including a CSI-IM resource, or a subframe including a ZPCSI-RS resource.

The CSI reference resource indication signaling is radio resourcecontrol RRC signaling.

An embodiment of the present invention further provides a userequipment, which includes a third obtaining module, configured to obtaina CSI process, where the CSI process corresponds to at least two CSIreference resources.

In the at least two CSI reference resources, at least one CSI referenceresource is a reference resource of a CQI channel part in the CSIprocess, and is a subframe including an NZP CSI-RS resourcecorresponding to the CSI process in a time domain; and at least one CSIreference resource is a reference resource of a CQI interference part inthe CSI process, and is a subframe including a CSI-IM resourcecorresponding to the CSI process in a time domain.

An embodiment of the present invention further provides a userequipment, including: a fourth obtaining module, configured to obtain aCSI process, where a CSI reference resource corresponding to the CSIprocess is multiple subframes in a time domain.

The multiple subframes are L subframes before a subframe triggering theCSI process or include the subframe triggering the CSI process and L-1subframes before the subframe triggering the CSI process, where L is apositive integer.

The L is predefined or is notified by a network device.

The CSI processes are CSI processes for periodic reporting or CSIprocesses for aperiodic reporting.

In the foregoing embodiments of the present invention, by defining thatin a time domain, a reference resource corresponding to a CSI process isa subframe or multiple subframes including a resource (such as NZPCSI-RS and CSI-IM) appearing in a certain period, a UE only measures andcalculates corresponding CSI according to the reference resourcecorresponding to the CSI process, and for multiple CSI processes whichare triggered for many times and have the same reference resource, theUE only needs to measure and calculate the corresponding CSI once,thereby reducing UE complexity for CSI process processing, solving aproblem of high UE complexity for CSI process processing, and solvingthe problem existing after a CoMP technology is introduced to someextent that the UE cannot implement processing of multiple CSIprocesses.

The “multiple” in the embodiments of the present invention can beunderstood as “at least two”.

Persons of ordinary skill in the art may understand that, all or a partof the steps of the foregoing method embodiments may be implemented by aprogram instructing relevant hardware. The foregoing program may bestored in a computer readable storage medium. When the program runs, thesteps of the foregoing method embodiments are performed. The foregoingstorage medium includes any medium capable of storing program code, suchas a ROM, a RAM, a magnetic disk, or an optical disc.

Finally, it should be noted that the foregoing embodiments are merelyintended for describing the technical solutions of the present inventionrather than limiting the present invention. Although the presentinvention is described in detail with reference to the foregoingembodiments, persons of ordinary skill in the art should understand thatthey may still make modifications to the technical solutions describedin the foregoing embodiments or make equivalent replacements to sometechnical features thereof, as long as such modifications orreplacements do not cause the essence of corresponding technicalsolutions to depart from the spirit and scope of the technical solutionsof the embodiments of the present invention.

What is claimed is:
 1. A channel-state information process processingmethod comprising: receiving, by a user equipment, a first channel-stateinformation (CSI) request sent by a first network device, wherein thefirst CSI request is used to trigger aperiodic CSI reporting; inresponse to receiving the CSI request, when aperiodic CSI correspondingto multiple aperiodic CSI processes has not been reported by the userequipment, sending, by the user equipment, CSI obtained throughmeasurement to the first network device or a second network device,wherein each CSI process is associated with a channel measurementresource and an interference measurement resource, and CSI correspondingto a part of the multiple aperiodic CSI processes is replaced by aprevious measurement result when a number of the multiple aperiodic CSIprocesses exceeds a first threshold; wherein the first threshold isdetermined by a maximum of CSI processes being processed permillisecond.
 2. The method according to claim 1, further comprising:dropping processing of the aperiodic CSI corresponding to the part ofthe multiple aperiodic CSI processes.
 3. The method according to claim2, wherein before the receiving a first CSI request from a first networkdevice, the method further comprises: receiving a second CSI request,wherein the multiple aperiodic CSI processes correspond to the first CSIrequest and the second CSI request.
 4. The method according to claim 3,wherein the dropping processing of aperiodic CSI corresponding to thepart of the multiple aperiodic CSI processes comprises: dropping,according to a dropping rule or priority, the processing of theaperiodic CSI corresponding to the part of the multiple aperiodic CSIprocesses that correspond to the first CSI request and the second CSIrequest.
 5. The method according to claim 4, wherein the dropping rulecomprises at least one of: dropping processing of aperiodic CSIcorresponding to an aperiodic CSI process with a maximum index number;and dropping processing of aperiodic CSI corresponding to an aperiodicCSI process that is triggered last.
 6. The method according to claim 2,wherein the dropping processing of aperiodic CSI corresponding to thepart of the multiple aperiodic CSI processes comprises: dropping,according to a dropping rule or priority, the processing of theaperiodic CSI corresponding to the part of the multiple aperiodic CSIprocesses corresponding to the first CSI request.
 7. The methodaccording to claim 2, wherein the dropping processing of aperiodic CSIcorresponding to the part of the multiple aperiodic CSI processescomprises: dropping processing of aperiodic CSI corresponding to thepart of the multiple aperiodic CSI processes according to the number ofthe multiple aperiodic CSI processes and a CSI process processingcapability of the user equipment.
 8. The method according to claim 7,further comprising: reporting the CSI process processing capability ofthe user equipment to the first network device or the second networkdevice.
 9. The method according to claim 1, wherein a number of anotherpart of the multiple aperiodic CSI processes is less than or equal tothe first threshold, and a sum of a number of the part of the multipleaperiodic CSI processes and the number of the other part of the multipleaperiodic CSI processes is equal to the number of the multiple aperiodicCSI processes.
 10. The method according to claim 1, wherein the firstthreshold is predefined.
 11. The method according to claim 1, furthercomprising: when, in addition to the aperiodic CSI corresponding to themultiple aperiodic CSI processes, CSI corresponding to multiple periodicCSI processes has not been reported by the user equipment, droppingprocessing of CSI corresponding to a part of the multiple periodic CSIprocesses which has not been reported.
 12. A user equipment comprising:a transceiver configured to receive a first channel-state information(CSI) request sent by a first network device, wherein the first CSIrequest is used to trigger aperiodic CSI reporting; a processorconfigured to, in response to the transceiver receiving the CSI requestwhen aperiodic CSI corresponding to multiple aperiodic CSI processes hasnot been reported by the user equipment, control the transceiver to sendCSI obtained through measurement to the first network device or a secondnetwork device, wherein CSI corresponding to a part of aperiodic CSIprocesses is replaced by a previous measurement result when a number ofthe multiple aperiodic CSI processes exceeds a first threshold; whereinthe first threshold is determined by a maximum of CSI processes beingprocessed per millisecond.
 13. The user equipment according to claim 12,wherein the processor is further configured to: drop processing of theaperiodic CSI corresponding to the part of the multiple aperiodic CSIprocesses.
 14. The user equipment according to claim 13, wherein thetransceiver is further configured to: receive a second CSI request,wherein the multiple aperiodic CSI processes corresponds to the firstCSI request and the second CSI request.
 15. The user equipment accordingto claim 14, wherein the processor is further configured to: drop,according to a dropping rule or priority, the processing of theaperiodic CSI corresponding to the part of the multiple aperiodic CSIprocesses that correspond to the first CSI request and the second CSIrequest.
 16. The user equipment according to claim 15, wherein thedropping rule comprises at least one of: dropping processing ofaperiodic CSI corresponding to an aperiodic CSI process with a maximumindex number; and dropping processing of aperiodic CSI corresponding toan aperiodic CSI process that is triggered last.
 17. The user equipmentaccording to claim 13, wherein the processor is further configured to:drop, according to a dropping rule or priority, the processing of theaperiodic CSI corresponding to the part of the multiple aperiodic CSIprocesses corresponding to the first CSI request.
 18. The user equipmentaccording to claim 13, wherein the processor is further configured to:drop processing of aperiodic CSI corresponding to the part of themultiple aperiodic CSI processes according to a number of the multipleaperiodic CSI processes and a CSI process processing capability of theuser equipment.
 19. The user equipment according to claim 18, whereinthe transceiver is further configured to: report the CSI processprocessing capability of the user equipment to the first network deviceor the second network device.
 20. The user equipment according to claim12, wherein a number of another part of the multiple aperiodic CSIprocesses is less than or equal to the first threshold, and a sum of anumber of the part of the multiple aperiodic CSI processes and thenumber of the other part of the multiple aperiodic CSI processes isequal to the number of the multiple aperiodic CSI processes.
 21. Theuser equipment according to claim 12, wherein the first threshold ispredefined.
 22. The user equipment according to claim 12, wherein theprocessor is further configured to, when, in addition to the aperiodicCSI corresponding to the multiple aperiodic CSI processes, CSIcorresponding to multiple periodic CSI processes has not been reportedby the user equipment, drop processing of CSI corresponding to a part ofthe multiple periodic CSI processes which has not been reported.